package homeWork;

import jdbc.DBUtil;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

/**
 *结果1: 登录成功,欢迎您: 用户昵称
 * 结果2: 登录失败,用户名或密码错误
 */
public class HomeWork06_1 {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection()) {
            Statement statement = connection.createStatement();
            Scanner scanner = new Scanner(System.in);
            System.out.println("用户名");
            String username = scanner.nextLine();
            System.out.println("密码");
            String password = scanner.nextLine();
            String sql = "SELECT nickname, password FROM userinfo WHERE username='"+username+"' AND password = '"+password+"'";
            ResultSet r = statement.executeQuery(sql);
            String nickname = r.getString("nickname");
            if(r.next()){
                System.out.println("登录成功,欢迎您: "+nickname);
            }else {
                System.out.println("登录失败,用户名或密码错误");
            }
        }catch (SQLException e){
            throw new RuntimeException(e);
        }
    }
}
